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HISTORICAL COST: An accounting principle stating that expenses are recorded in terms of original or acquisition cost. Such a practice does not necessarily indicate the opportunity cost or current market value.

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LONG-RUN MARGINAL COST

The change in the long-run total cost of producing a good or service resulting from a change in the quantity of output produced. Like all marginals, long-run marginal cost is an increment of the corresponding total. It is the change in long-run total cost divided by, or resulting from, a change in quantity. Long-run marginal cost is guided by returns to scale rather than marginal returns.

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Today, you are likely to spend a great deal of time visiting every yard sale in a 30-mile radius trying to buy either a replacement battery for your pocket calculator or a how-to book on home remodeling. Be on the lookout for crowded shopping malls.
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The average length of a "business lunch" is about 36 minutes.
"Lord, where we are wrong, make us willing to change; where we are right, make us easy to live with. "

-- Peter Marshall, US Senate chaplain

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